SC 13G/A: Statement of acquisition of beneficial ownership by individuals (Amendment)-T. Rowe Price Investment Management, Inc.(7.1%)
4: Statement of changes in beneficial ownership of securities-Officer Alvarado Anna M
4: Statement of changes in beneficial ownership of securities-Director ROSENBERG STEVE
4: Statement of changes in beneficial ownership of securities-Director STALLINGS ROBERT W
4: Statement of changes in beneficial ownership of securities-Director STALLINGS ROBERT W
4: Statement of changes in beneficial ownership of securities-Director STALLINGS ROBERT W
4: Statement of changes in beneficial ownership of securities-Director STALLINGS ROBERT W
4: Statement of changes in beneficial ownership of securities-Director STALLINGS ROBERT W
4: Statement of changes in beneficial ownership of securities-Director STALLINGS ROBERT W
4: Statement of changes in beneficial ownership of securities-Officer Holmes Rob C
4: Statement of changes in beneficial ownership of securities-Officer Cummings John W
4: Statement of changes in beneficial ownership of securities-Officer Alvarado Anna M
4: Statement of changes in beneficial ownership of securities-Officer Scurlock John Matthew
4: Statement of changes in beneficial ownership of securities-Director STALLINGS ROBERT W
4: Statement of changes in beneficial ownership of securities-Director STALLINGS ROBERT W
4: Statement of changes in beneficial ownership of securities-Officer Oman David W
4: Statement of changes in beneficial ownership of securities-Officer Storms Timothy J
3: Initial statement of beneficial ownership of securities-Officer Oman David W
4: Statement of changes in beneficial ownership of securities-Director Midkiff Mark W
3: Initial statement of beneficial ownership of securities-Director Midkiff Mark W
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